So I've had this funy squeek in my engine bay for the longest time, and I have always thought it was coming from the A/C compressor. To prove a point, I cut off the belt to the A/C compressor and the noise stopped. Playing with the wheel I found that while it DOES turn freely, it squeeks in like 3 places, making me think the wheel could just use machining. (All the same places every rotation, so not bearings) I want to take it apart to look at it and see what needs to be done even if it is replacement. How do I decompress the A/C system safely both to myself and the environment? My system is R134a, so it isn't the killer Freon. Has anyone done this and could prove insight? The engine this is from is the D16z6 in my Del Sol. Thanks for any and all help. Oh, and NO I am not getting rid of the A/C. I take pictures at ice rinks on the weekends so I must dress warm... during the summer. So I needs that A/C!